Growth indicators and their relation in individuals with different skeletal malocclusions

Session

Dental Sciences

Description

Introduction: Growth and development variations among individuals with the same chronologic age have led to necessities of assessing individual biologic maturity. Knowledge and understanding of facial growth and development is fundamental to determine the optimal timing for orthodontic, and dental orthopedic treatment planning. In dentofacial orthopedics, the issue of optimal timing is linked intimately to the identification of periods of favorable growth in structures such as the mandibular condyles or the circummaxillary sutures. Treatment timing during these favorable growth processes can contribute significantly to the efficient and effective improvement of skeletal problems in the individual patient. Aim: To study the correlation between cervical vertebral maturity index (CVMI) according to Baccetti and dental calcification index (DI) according to Demirjian method, in individuals with Class I, II and III skeletal relationship. Compare the data with the chronological age and analyze the reproducibility and reliability of the methods in assessing individual skeletal maturity. Methods: Panoramic and lateral cephalometric radiographs of 100 individuals were evaluated, with age range from 7-19 years. Skeletal maturation stages according to Baccetti method were determined in lateral cephalometric radiographs. DI of upper canines (UC) and lower second molars (LSM) with Demirjian method were evaluated in panoramic x-ray. Digital lateral cephalograms and panoramic radiographs were performed by Vatech and they were analyzed and saved in DICOM format using dedicated software (Easydent version 4.1). Statistical analysis Chi square with p=0.05 and Pearson’s correlation coefficient were performed in IBM SPSS version 26 to assess the correlation between CVMI and DI for intergroup comparison. Results: The correlation values range from 0.878 for UC and 0.945 for LSM females, and 0.903 for UC and 0.888 LSM males. Our initial results show that the results are statistically significant with P-values < 0.05. Sexual dimorphism was found between males and females; females show a slightly earlier skeletal maturity compared to males, class II individuals, especially females, show earlier skeletal maturation. Pubertal growth spurt (CS3–CS4) was longer in Class III subjects than in subjects with normal skeletal relationships. Males show an earlier dental calcification stage compared to females in the corresponding skeletal maturation stage. Conclusion: The initial data suggest positive strong correlation coefficient between CVMI and DI can be used to assess individual skeletal maturity. But to ensure the reproducibility, reliability and validity of the method further data is needed.

Keywords:

skeletal maturation, cervical vertebral maturation, dental maturation, Demirijan index, growth prediction, chronological age, growth modification, lateral cephalogram, panoramic x-ray

Proceedings Editor

Edmond Hajrizi

ISBN

978-9951-550-50-5

Location

UBT Kampus, Lipjan

Start Date

29-10-2022 12:00 AM

End Date

30-10-2022 12:00 AM

DOI

10.33107/ubt-ic.2022.229

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Oct 29th, 12:00 AM Oct 30th, 12:00 AM

Growth indicators and their relation in individuals with different skeletal malocclusions

UBT Kampus, Lipjan

Introduction: Growth and development variations among individuals with the same chronologic age have led to necessities of assessing individual biologic maturity. Knowledge and understanding of facial growth and development is fundamental to determine the optimal timing for orthodontic, and dental orthopedic treatment planning. In dentofacial orthopedics, the issue of optimal timing is linked intimately to the identification of periods of favorable growth in structures such as the mandibular condyles or the circummaxillary sutures. Treatment timing during these favorable growth processes can contribute significantly to the efficient and effective improvement of skeletal problems in the individual patient. Aim: To study the correlation between cervical vertebral maturity index (CVMI) according to Baccetti and dental calcification index (DI) according to Demirjian method, in individuals with Class I, II and III skeletal relationship. Compare the data with the chronological age and analyze the reproducibility and reliability of the methods in assessing individual skeletal maturity. Methods: Panoramic and lateral cephalometric radiographs of 100 individuals were evaluated, with age range from 7-19 years. Skeletal maturation stages according to Baccetti method were determined in lateral cephalometric radiographs. DI of upper canines (UC) and lower second molars (LSM) with Demirjian method were evaluated in panoramic x-ray. Digital lateral cephalograms and panoramic radiographs were performed by Vatech and they were analyzed and saved in DICOM format using dedicated software (Easydent version 4.1). Statistical analysis Chi square with p=0.05 and Pearson’s correlation coefficient were performed in IBM SPSS version 26 to assess the correlation between CVMI and DI for intergroup comparison. Results: The correlation values range from 0.878 for UC and 0.945 for LSM females, and 0.903 for UC and 0.888 LSM males. Our initial results show that the results are statistically significant with P-values < 0.05. Sexual dimorphism was found between males and females; females show a slightly earlier skeletal maturity compared to males, class II individuals, especially females, show earlier skeletal maturation. Pubertal growth spurt (CS3–CS4) was longer in Class III subjects than in subjects with normal skeletal relationships. Males show an earlier dental calcification stage compared to females in the corresponding skeletal maturation stage. Conclusion: The initial data suggest positive strong correlation coefficient between CVMI and DI can be used to assess individual skeletal maturity. But to ensure the reproducibility, reliability and validity of the method further data is needed.